Add domain guard validation

Author: aimenux

src/Api/DummiesDatabase.db

@@ -16,7 +16,7 @@ public GetDummyQueryHandler(IDummyRepository dummyRepository)
 
     public async Task<GetDummyQueryResponse> Handle(GetDummyQuery query, CancellationToken cancellationToken)
     {
-        var dummyId = new DummyId(Guid.Parse(query.Id));
+        var dummyId = new DummyId(query.Id);
         var dummy = await _dummyRepository.GetDummyByIdAsync(dummyId, cancellationToken);
         if (dummy is null)
         {

src/Application/UseCases/Queries/GetDummy/GetDummyQueryHandler.cs

@@ -7,7 +7,6 @@ public class GetDummyQueryValidator : AbstractValidator<GetDummyQuery>
     public GetDummyQueryValidator()
     {
         RuleFor(x => x.Id)
-            .NotEmpty()
-            .Must(x => Guid.TryParse(x, out var _));
+            .NotEmpty();
     }
 }

src/Application/UseCases/Queries/GetDummy/GetDummyQueryValidator.cs

@@ -4,8 +4,8 @@ namespace Domain.Models.Entities;
 
 public sealed class Dummy
 {
-    public DummyId Id { get; private init; }
-    public DummyName Name { get; private init; }
+    public DummyId Id { get; }
+    public DummyName Name { get; }
 
     private Dummy(DummyId id, DummyName name)
     {
@@ -15,6 +15,8 @@ private Dummy(DummyId id, DummyName name)
 
     public static Dummy CreateDummy(DummyId id, DummyName name)
     {
+        ArgumentException.ThrowIfNullOrWhiteSpace(id.Value);
+        ArgumentException.ThrowIfNullOrWhiteSpace(name.Value);
         var dummy = new Dummy(id, name);
         return dummy;
     }

src/Domain/Models/Entities/Dummy.cs

@@ -1,6 +1,6 @@
 namespace Domain.Models.ValueObjects;
 
-public sealed record DummyId(Guid Value)
+public sealed record DummyId(string Value)
 {
-    public static implicit operator DummyId(Guid id) => new(id);
+    public static implicit operator DummyId(string id) => new(id);
 }

src/Domain/Models/ValueObjects/DummyId.cs

@@ -25,5 +25,5 @@ public void Configure(EntityTypeBuilder<Dummy> builder)
             });
     }
 
-    private static Dummy CreateDummy(Guid id) => Dummy.CreateDummy(id, $"{id:N}");
+    private static Dummy CreateDummy(Guid id) => Dummy.CreateDummy($"id-{id:N}", $"name-{id:N}");
 }

src/Infrastructure/Persistence/Configurations/DummyConfiguration.cs

@@ -38,7 +38,7 @@ public async Task<ICollection<Dummy>> SearchDummiesAsync(string keyword, Cancell
 
     public async Task<Dummy> AddDummyAsync(DummyName name, CancellationToken cancellationToken)
     {
-        var id = new DummyId(Guid.NewGuid());
+        var id = new DummyId($"{Guid.NewGuid():N}");
         var dummy = Dummy.CreateDummy(id, name);
         await _context.Set<Dummy>().AddAsync(dummy, cancellationToken);
         await _context.SaveChangesAsync(cancellationToken);